Where does Yangtze Railroad Materials rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Yangtze Railroad Materials ranks #44,183 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Yangtze Railroad Materials hold?

Yangtze Railroad Materials holds 6 US utility patents granted between 2017 and 2024, spanning 3 technology areas.

What is Yangtze Railroad Materials's Innovation Score?

Yangtze Railroad Materials has an Innovation Score of 22.0 out of 100 (9th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Yangtze Railroad Materials's patent grant rate increasing or decreasing?

Yangtze Railroad Materials's recent grant velocity is -50% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Yangtze Railroad Materials's patents?

Yangtze Railroad Materials's patents average 9.7 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Yangtze Railroad Materials patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO 2015–2025 USPTO PatentsView US Corporation

Yangtze Railroad Materials

Q: What technology areas does Yangtze Railroad Materials focus on?

Yangtze Railroad Materials's top technology area is E01B (Permanent WAY; Permanent-way TOOLS; Machines FOR Making Railways OF ALL Kinds) with 2 patents. Grants appear in 3 CPC subclasses total.

USPTO PatentsView assignee record - 6 granted patents across 3 technology areas, recorded in grant years 2017–2024. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: E01B (Permanent WAY; Permanent-way TOOLS; Machines FOR Making Railways OF ALL Kinds).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Yangtze ranks #44,183 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 3 technology areas.

#44,183
of 49,997 US assignees by volume: 9th percentile
by Innovation Score (22.0/100): 9.7
avg claims per patent: -50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R44183 · US Corporation #44,183 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #44,183/49,997
PHOTO-FINISH Yang and Cohen…
CPC-NARROW E01B · 3 areas
INNOV-THIN 22.0/100
CLAIMS-PAR 9.7 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -50% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Yang and Cohen Enterprises, Inc. (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

Qualcomm Incorporated · highest

85
Yangtze Railroad… · this assignee

22
3D Lighting… · lowest

7

What this shows Yangtze's Innovation Score is 22.0/100 (9th percentile of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Where Yangtze's grants concentrate

Yangtze Railroad Materials is a focused PatentsView assignee: 3 CPC subclasses with 33.3% of grants classified under E01B (Permanent WAY; Permanent-way TOOLS; Machines FOR Making Railways OF ALL Kinds). Peak complete grant year is 2017 (3 grants) versus a trough of 1 in 2019. By volume, Yangtze sits between Yuanchu Technology (BEIJING) Co., Ltd. and Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences.

Yangtze's three-year grant acceleration

Yangtze Railroad Materials shows 1 grants in 2022–2024 against only 2 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Yuanchu Technolog…

6
Yunfu Hongrui Int…

6
Yutaka MFG

6
Yang and Cohen En…

6
Yantai Dongxing M…

6
Yardbird Outside

6
Yeiser Research &…

6
Yellow Sea Fisher…

6
Yangtze Railroad… ◀

6

What this shows Yangtze holds 6 patents at rank #44,165, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Yangtze

By rank, the assignees closest to #44,165 in granted patent volume.

Leaders in E01B (Permanent WAY)

Other assignees with the most granted patents in Yangtze's primary technology class.

Yangtze's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

22 9th percentile higher than 9% of 49,997 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2017–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Yangtze Railroad Materials patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	3	50.0%
2019	1	16.7%
2020	1	16.7%
2024	1	16.7%

Which technologies does Yangtze Railroad Materials patent most?

E01B - Permanent WAY; Permanent-way TOOLS; Machines FOR Making Railways OF ALL Kinds 2

B21J - FORGING; HAMMERING; Pressing METAL; RIVETING; Forge Furnaces 2

B21K - Making Forged OR Pressed Metal Products, e.g. Horse-shoes, Rivets, Bolts OR Wheels 2

Top 3 of 3 technology areas

Where it ranks

Overall rank by patents

#44,183

of 49,997 tracked assignees

Innovation Score

22.0 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Yangtze Railroad Materials's patent record in context - here's where to go next.

Yangtze Railroad Materials's lead technology class is E01B (Permanent WAY; Permanent-way TOOLS; Machines FOR Making Railways OF ALL Kinds), 33.3% of its portfolio - see every assignee active in that class. Explore E01B
Ranked #44,183 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Yangtze Railroad Materials against Yuanchu Technology (BEIJING) Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 22.0/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled by PlainPatent, US Patent Intelligence Editorial Process · May 15, 2026

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.